Without color; lacking characteristics which give variety. blank (Adjective). Free from writing, printing, or marks; having an empty space to be filled in; as, blank paper; a blank check; a blank ballot. blank (Adjective). Without expression.
Yes they do damage hair. Every time I have tried one ,I wound up looking like a Q-tip or my head looked like cotton. A perm will damage even more and look worse if you have been coloring your hair. There's chance of it looking okay if you don't color your hair.
After shampooing your hair it is essential that you condition it. It is a myth that conditioner will relax and ruin your perm. By using the right conditioner on your hair will only keep the perm healthier, thus lasting longer. Choose a light conditioner for your hair that is also for chemically treated hair.